Merge pull request #3396 from amyspark/hacktoberfest-upgrade

Library/Homebrew/cask/lib/hbc/artifact/moved.rb

Library/Homebrew/cask/lib/hbc/cli.rb

Library/Homebrew/cask/lib/hbc/cli/upgrade.rb

Library/Homebrew/cask/lib/hbc/installer.rb

Library/Homebrew/test/cask/cli/reinstall_spec.rb

Library/Homebrew/test/cask/cli/uninstall_spec.rb

Library/Homebrew/test/cask/cli/upgrade_spec.rb

...Homebrew/test/support/fixtures/cask/Casks/auto-updates.rb

...test/support/fixtures/cask/Casks/outdated/auto-updates.rb

...test/support/fixtures/cask/Casks/outdated/bad-checksum.rb

...ort/fixtures/cask/Casks/outdated/will-fail-if-upgraded.rb

...test/support/fixtures/cask/Casks/will-fail-if-upgraded.rb